Environmental chemistry has evolved into a discipline which is far more than a series of applications of chemistry to environmental problems. The complexity and diversity of environmental systems demands a corresponding variety in the group of researchers who call themselves environmental chemists. This unique volume reflects this diversity and provides an in-depth introduction to a wide variety of topics within environmental chemistry. It features state-of-the-art contributions from leading scientists who are actively involved in an extensive range of research areas within environmental chemistry. Written at a level accessible to general readers, this volume has been carefully edited for consistency of level and style, and is fully referenced and indexed. It is organized into sections describing fundamental work in the environmental chemistry of condensed-phase systems, studies in atmospheric chemistry, and chapters more directly related to field data.